tree 682fc23a7cf203d3762c7f284598a2895914ed5e
parent a8ebb056a8aeb58aafef0af241a6b3ac34ac86bd
author Mike Christie <mchristi@redhat.com> 1465155106 -0500
committer Jens Axboe <axboe@fb.com> 1465328498 -0600

dm: use op_is_write instead of checking for REQ_WRITE

We currently set REQ_WRITE/WRITE for all non READ IOs
like discard, flush, writesame, etc. In the next patches where we
no longer set up the op as a bitmap, we will not be able to
detect a operation direction like writesame by testing if REQ_WRITE is
set.

This has dm use the op_is_write helper which will do the right
thing.

Signed-off-by: Mike Christie <mchristi@redhat.com>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Jens Axboe <axboe@fb.com>